Safety guard for twisting machines



July 20 1926.

1,593,074 F. K. HENDRICKSON ET AL SAFETY sump F'OR Tvusnne mcamas Filed April 17, 1926 4 v If v J I I I] I I I I I l I l I i .5 7km K. llwdn'cksm,

ATTORNEY.

Patented July 2t), 1925.

UNITE!) STATE PATENT OFFICE.

FRED K. HENDRICKSON AND SIGUB/D H. HELLAND, OF WHITINSVILLE, MASSACHU- SETTS, ASSIGNOBIS T0 WI-II'IIN MACHINE WORKS, OF WHITINSVILLE, MASSA- CHUSETTS, A CORPORATION OF MASSACHUSETTS.

SAFETY GUARD FOB. TJVISTING IVIACHINES.

Application filed. April 17, 1926. Serial No. 192,664.

Our invention has reference to twisting machines and more particularly to safety devices for such machines. and the invention consists of a guard which is arranged and adapted to cover the entrance to the place of danger to the operative at the intersection of the peripheries of the top and bottom rolls. In twisting machines the operative in the performance of her duties is quite liable to insert her fingers in too close proximity to the bite of the delivery rolls. with the result that it not unfrequently happens that her fingers are caught and drawn between the rolls and seriously injured thereby.

The object of our invention is to introduce into the construction of the machine a simple but effectual guard whereby it is impossible for the operative to receive injuries while the machine is in operation.

A preferred embodiment of our invention is described below in connection with the drawings forming a part hereof, and the distinguishing features of the invention are more particularly pointed out in the appended claims. 1

In the drawings, Figure 1 is a fragmentary front elevation of a portion of a twisting machine showing our improved safety device applied thereto; Figure 2 is a plan view of Figure 1 and Figure 3 is an enlarged vertical transverse section on line 3-3 of Figure 1 showing the line of passage of the yarn through the delivery rolls to thereceiving spool.

Referring to the above figures, it will be understood by those familiar in this art that twisting machines as usually constructed comprise a line of delivery rolls driven by suitable means (not shown in drawings) and a line of top rollers superimposed on the driving roll and frictionally driven therefrom. The driving roll 10 is rotatable in bearings 11 formed in the supporting stands 12 fixedly connected to the framing 13 of the machine. From four to eight top rolls 14 coact with each section of driving roll and are held in proper position thereon by their journals projecting into bearings formed in the fingers 15 of the cap-bar 16 detachably mounted in bearings 17 located in the upper part of the supporting stands 12.

Projecting from the outer end of each finger 15 is a downwardly extending guard 18 of an inverted T-shaped form, the horizontal portions 19 of which are so located as to cover the intersection of the peripheries of two adjacent top-rolls, with that of the driving roll. A space 20 is provided between the ends of two adjacent guards for the passage of a thread 21 by the operative in the act of piecing-up after a breakage of the thread.

By this construction it is impossible for the operatives fingers being caught in the bite of the rolls thus averting possible serious injury to the operative.

We claim:

1. In a machine of the character described, in combination, a driving drawing roll, a plurality of top-rolls superimposed on said driving roll and frictionally driven thereby, bearing stands for supporting said driving roll, a cap-bar supported between said stands, a plurality of fingers on the capbar each finger positioning two adjacent toprolls on the driving roll, and means attached to each finger for covering the intersection of the peripheries of the rolls.

2. In a machine of the character described, in combination, a driving drawing roll, a plurality of top-rolls superimposed on said driving roll and frictionally driven thereby, bearing stands for supporting said driving roll, a cap-bar supported between said stands, a plurality of fingers on the cap bar each finger positioning two adjacent top-rolls on the driving roll, an extension to each finger of an inverted T shaped form, the horizontal portions of which guard the intersection of the peripheries of the rolls, and a space between adjacent guards for the passage of the thread.

In testimony whereof we have signed this specification.

FRED K. HENDRICKSON. SIGURD H. HELLAND. 

